The condom broke, therefore you had a risk for HIV and need to test. Have a 4th generation DUO at 28 days post this exposure. The results will be conclusive.
Symptoms are never used to diagnose HIV.
Please do not call yourself stupid. You were smart to use protection and it's not your fault the condom broke.
You should also be checked for STD's. You can post to our STD Forum for testing protocols.
We wish you the best outcome.